Add 63/12 and 70/45
1st number: 5 3/12, 2nd number: 1 25/45
63/12 + 70/45 is 245/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
63/12 = 63 × 15/12 × 15 = 945/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
70/45 = 70 × 4/45 × 4 = 280/180 - Add the two like fractions:
945/180 + 280/180 = 945 + 280/180 = 1225/180 - 1225/180 simplified gives 245/36
- So, 63/12 + 70/45 = 245/36
In mixed form: 629/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/24+70/45 63/12+70/90 63/36+70/45 63/60+70/45 63/84+70/45